Exposure device for an electrophotographic apparatus

Details Exposure device for an electrophotographic apparatus Exposure device for an electrophotographic apparatus

2004-05-03

2008-03-04

Pham, Hai (Department: 2861)

Incremental printing of symbolic information

Light or beam marking apparatus or processes

Scan of light

C347S258000

Reexamination Certificate

active

07339603

ABSTRACT:
An exposure device for an electrophotographic apparatus including one or more laser light sources which expose an image carrier in accordance with a print information signal supplied from an external information processing apparatus, a resolution switching lens, and a switching unit to switch over a low resolution and a high resolution by inserting and extracting the resolution switching lens into and from a laser optical path. Preferably, a light emission time of each of the laser light sources with respect to the print information signal is changeable.

REFERENCES:
patent: 5262801 (1993-11-01), Serizawa
patent: 5489936 (1996-02-01), Appel et al.
patent: 5936755 (1999-08-01), Inagaki
patent: 6559875 (2003-05-01), Okano et al.
patent: 6847390 (2005-01-01), Maeda
patent: 2004/0085437 (2004-05-01), Sumi et al.
patent: 2002-131991 (2002-05-01), None

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